GZA GeoEnvironmental Technologies, Inc.
Provides environmental consulting, remediation and geotechnical services, including assessment and evaluation of contaminated sites and design, construction and operation of remediation systems.
http://www.gza.com/

Marcus Hodges Environment Ltd
Offers services in environmental management and strategic planning, contaminated land assessment and site development, design and engineering of waste and mineral sites, water resources development and protection, and asbestos consultation. International, based in UK.
http://www.mhe.co.uk/

Northern Environmental and Monitoring Services (NEMS)
NEMS is an environmental, health and safety consultancy providing specialist services to industry and the public sector
http://www.n-e-m-s.com/

Hawaii International Environmental Services
Providing environmental and engineering services throughout the Pacific, Western US and Southeast Asia. From planning and permitting, site assessment, remedial design to remediation of contaminated sites. Also sells waste oil to energy heaters, boilers and air conditioners that safely dispose of waste oil and reduces your energy bill in the process.
http://www.hawaii.edu/abrp/hawaiiwp/hies.html

Northern Environmental and Monitoring Services (NEMS)
NEMS is an environmental, health and safety consultancy providing specialist services to industry and the public sector
http://www.n-e-m-s.com/

Hydrosolutions Pty Ltd
Hydrosolutions PL provides hydrogeological and environmental consultancy services. We provide groundwater resource exploration and development, minesite dewatering and tailings monitoring, contaminated land investigation, remediation, risk assessment and environmental auditing services.
http://www.hydrosolutions.com.au/

Contaminated Soil Sediment and Water
Publication of the Association for Environmental Health and Sciences (AEHS) concerned with the challenge of environmental assessment, protection, cleanup and remediation.
http://www.aehsmag.com/

Green Environment, Inc.
Providing environmental site assessment for commercial and industrial properties, EH&S compliance evaluation, contaminated property project management, and environmental permitting.
http://www.greenenvironment.com/

Striplin Environmental Associates
Specializing in contaminated sediment investigation and management, including dredged material characterization and environmental impact assessment. Washington State, USA.
http://www.striplin.com/

Contaminated Land Assessment and Remediation Research Centre (CLARRC)
Centre of excellence for multi-disciplinary research, developing technologies for sustainable, cost effective assessment & remediation of contaminated environments & promoting transfer to industry.
http://www.clarrc.ed.ac.uk/